For years, Flash was the lifeblood of the unblocked web. It allowed amateur developers to create games in their bedrooms that would be played by millions in computer labs worldwide. When Flash died, many of the classic archery titles stopped working on modern browsers.
When Facebook and Twitter were blocked on school networks, Google+—being integrated into the Google ecosystem used for education (Google Docs, Drive, etc.)—often slipped through the cracks. This led to a strange, brief flourishing of gaming communities on the platform.